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Race Dates

2018: Sunday, October 14, 2018
2017: Sunday, October 15, 2017

Course Information

Profile: Rolling Hills
Type: Out and Back
Surface: Road/Pavement
Certified?: Yes

Race Day Weather

Mean Temp.: 51°F (10°C)
Average High: 60°F (15°C)
Average Low: 42° F (5°C)

Historical Weather

PR Score & Course Score

PR Score: 97.52
Course Score: 97.52

Race Size

2017: 75 Finishers
2016: 133 Finishers
2015: 161 Finishers

BQ Percentages

2018: N/A
2017: 20%
2016: 13.5%

Miscellaneous Information

Pace Groups?: No

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Course Description

The Humboldt Redwoods Marathon course is the same as Avenue of the Giants Marathon course held in May.

The rolling course is on pavement and almost entirely under a canopy of old growth redwood trees. The races finish on the Avenue of the Giants about 148 yards north of the starting line.

Marathon Rankings

The Humboldt Redwoods Marathon was the 409th largest marathon in the U.S. last year and was the 336th largest in 2016.

Last year 20% of finishers qualified for the Boston Marathon and 13.5% of runners qualified for Boston in 2016.

This gives the Humboldt Redwoods Marathon the 54th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 113th highest percentage in 2016.

Its Course Score of 97.52 ranks it as the 356th fastest marathon course in the U.S. and the 26th fastest course in California.

The typical race time temperature and humidity levels are the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Humboldt Redwoods Marathon a PR Score of 97.52. This PR Score ranks it as the 306th fastest marathon in the U.S. and the 21st fastest in California.

Learn more about PR Scores and Course Scores on the FAQ page.

Elevation Chart

Max Elevation: 360 feet (109m)
Min Elevation: 124 feet (37m)


Recent Humboldt Redwoods Marathon Reviews

5 Stars from 1 Reviews
View all Reviews

review of 2016 Humboldt Redwoods Marathon.   

5 / 5 Stars


Small, no frills race with the first half going out and back on the Avenue of Giants. Very scenic. Typically great marathon weather. Crowd support is sparse, you are in the middle of nowhere northern California. Only complaint is second half of the race the road you run on needs to be repaved - watch your step or you'll hit a pothole.

Race Tips

You are in the middle of nowhere. Seriously. Don't forget your GU or whatever nutrition you take; they won't have any to buy at packet pickup. Packet pickup is just that, here's your bib, here's your shirt, see you tomorrow.

Logistical Tips (Hotels, Restaurants, Parking, Discounts, etc.)

There are very limited housing and restaurant options near the race. Don't let that scare you away though. It just means you'll need to plan ahead.

Finish Time Equivalent

If you ran the Humboldt Redwoods Marathon in 3:51:00, what would your time in the Boston Marathon be?

See how your race times would compare on other marathon courses using the Marathon Time Converter Tool.